On the Trail of the Space Pirates
On the Trail of Pontiac; Or, The Pioneer Boys of the Ohio
On the Trail of Grant and Lee
On the Trail of Deserters; A Phenomenal Capture
On the Trail: An Outdoor Book for Girls
On the Track
On the Study of Zoology
On the Study of Words
On the State of Lunacy and the Legal Provision for the Insane
On the Stairs
On the Stage--and Off: The Brief Career of a Would-Be Actor
On the Spanish Main; Or, Some English forays on the Isthmus of Darien
On the Significance of Science and Art
On the Seashore
On the Ruin of Britain
On the right of the British line